Kyoka Jiro (耳じ郎ろう響きょう香か Jirō Kyōka?), also known as Hearing Hero: Earphone Jack (ヒアヒーローイヤホン＝ジャック Hia Hīrō Iyahon Jakku?), is a student in Class 1-A at U.A. High School, training to become a Pro Hero.